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An extremely useful programming algorithm for rounding a real numbers to a decimal places is Step1: Multiply the number by 10n Step2: Add 0.5 Step3: Delete the fractional part of the result Step4: Divide by 10n For example, using this algorithm to round the number 78.374625 to three decimal places yields: Step1: 78.374625 x 103 = 78374.625 Step2: 78374.625 + 0.5 = 78375.125 Step3: Retaining the integer part = 78375 Step4: 78375 divided by 10 = 78.375 Using this algorithm, write a C++ function that accepts a user-entered value and returns the result rounded to two decimal places.

An extremely useful programming algorithm for rounding a real numbers to a decimal places is Step1: Multiply the number by 10n Step2: Add 0.5 Step3: Delete the fractional part of the result Step4: Divide by 10n For example, using this algorithm to round the number 78.374625 to three decimal places yields: Step1: 78.374625 x 103 = 78374.625 Step2: 78374.625 + 0.5 = 78375.125 Step3: Retaining the integer part = 78375 Step4: 78375 divided by 10 = 78.375 Using this algorithm, write a C++ function that accepts a user-entered value and returns the result rounded to two decimal places.

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
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An extremely useful programming algorithm for rounding a real numbers to a decimal places is

  • Step1: Multiply the number by 10n
  • Step2: Add 0.5
  • Step3: Delete the fractional part of the result
  • Step4: Divide by 10n

For example, using this algorithm to round the number 78.374625 to three decimal places yields:

  • Step1: 78.374625 x 103 = 78374.625
  • Step2: 78374.625 + 0.5 = 78375.125
  • Step3: Retaining the integer part = 78375
  • Step4: 78375 divided by 10 = 78.375

Using this algorithm, write a C++ function that accepts a user-entered value and returns the result rounded to two decimal places.

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